Comp Test's

[RB SANDY]

Is there a post on comp test's and how it is done also what should all the psi's be and the leak down time on a rb25 also do you take out all the plugs

or just the one you are doing also to stop the fuel can you just pull fuse out.

[psybic]

Take out all the plugs and open the throttle. Crank if over a few times, use a screw in one if you can, I used one that you just hold down the other day, results are dodgy to say the least on those.

[Cubes]

1. idle car, disconnect fuel pump and the car will stall

2. remove all spark plugs

3. connect tester to each pot while cranking ~5secs each with throttle wide open.

PSI in every cylinder doesn't really matter. Its the variance between that is critical.

However, providing your tester is reading correctly it should be no lower than 140psi. Optimally it should be up around 160.

The guages read all different. Don't be too concerned with the actual reading, just the variance.

[RB SANDY]

does any one know the leak down time on a rb25.

[RB SANDY]

also should you take the car for a short drive or make it go to running temperature. thanks for all your help guys.

[Adriano]

Im not sure what you mean by leak down time, as the leak down testers that i have used have all been measured in percentage laek down, anything abuve 6% and i would be concerned.

[Cubes]

Yes bring the car up to operating temp.